The cryoprotectant is basically a medical-grade anti-freeze, if you like.

如果您愿意， 冷冻保护上是一种医级防冻。

The cryonicists then try to replace some of the body's water with a cryoprotectant, which basically acts like human antifreeze.

然，冷冻专家尝试一种冷冻保护代替的部分水分，这种冷冻保护的作上类似于防冻。